Method of cutting ornamentation on glass articles.



J. STOTT. v METHOD OF CUTTING ORNAMENTATION 0N GLASS ARTICLES.

APPLIOATION FILED JAN. 30, 1914. Patented July 14, 1914.

2 BHEETB-BHBET 1.

J.STOTT. METHOD OF CUTTING ORNAMENTATION 0N GLASS ARTICLES.

APPLICATION FILED JAN. 30, 1914.

1,13,63L Patentd July 14,1914.

2 SHEETS-SHEET 2.

WITNESSES To all whom it may concern:

UNITED W NT O -1 JAMES sro'r'r, or MANAXUNK, PENNSYLVANIA.

" METHOD or CUTTING oBNAMENrATmuon GLASS ARTICLES.

Speciflcationof Letters Patent.

Patented July 14:, 1914.,

j Application filed January 30, 1914. Serial No. 815,367.

Be it known that I, JAMEs of the United States,and resident of Mana- Pennsylvania,

'yunk, county of Philadelphia, and State of tion on Glass Articles, of which the following is a specification.

The object of my invention 1s to provide a method to obtain the ornamentatlon of cut-glass articles, such as those used for table ware, toilet articles, and similar purposes, whereby theornamentation may be produced with rich effect and low cost.

In the preferred carrying out of' my'mvention, the cutting is produced in that form in which there would be more or less of a depression substantially V-shaped'in cross section, and in which, moreover, the surfaces of the depression would have formed in their walls a plurality. of parallel minor or secondary V-depressions or cuts, which may be either left in frosted condition or polished, as desired.

In practising my improved method,'a single operation of cutting the ornamentation not only may produce the. main cut as to Variable depth, but also simultaneously produces the secondary parallel V-cuts, so that there is a minimum handling and time consumed in forming a large number of parallel cuts which are so grouped as to produce a brilliant prismatic efl'ect-where the grooves are polished, or a rich frosted efi ect where the grooves are not polished, said frosted effect being in strong contrast with the poli'shed surface of the general body of the article.

My improved method is best practised by Special manipulation of a grinding wheel of corundum or emery composition, having its peripheral surface provided with a plurality of parallel cutting portions having ll-shaped transverse sectional configurations, adjacent circumferential cutting edges being arranged at different radlal d1stances from the axis of the wheel, and in the preferred form of such grinding wheel,

the peripheral cutting part of. the wheel is formed by two surfaces meeting in a plane between the sides of the wheel, and said surfaces of more or less conical shape and providedwith a large number of small. cir 'cumferential parallel cutting edges ofsub- ,istantially V-shaped cross section, the whole forming acutting tool with -a more or less S'ro'r'r, citizen have invented an Improve-' ment in Methods for Cutting Ornamenta V-shapcd circumferential'cutting part, the inclined surfaces of whichare also provided with V-shaped cutting ridges of smaller size, all of-Which Will be better understood by reference to the accompanying drawings, in which Figure 1, is' a side elevation of a grinding wheel adapted for use in the method embodying my invention; Fig. 2 is a transverse section of the same; Fig. 3 is anenlarged view of the u per portion of Fig. 2 showing more in detail the cutting surface; Figs. 4 and 5 are similar sectional views corresponding to Fig. 3, andv showing modifications of the peripheral cut-ting surfaces; Fig. 6 is a plan view illustrating a portion of the leaf effect which may be produced by my improved method at one op'eration by the use ofa grinding wheel of the character shown in Fig. 5; Fig. 7 is a plan view of tWo' full leaf and stem effects produced by my improved method by employing the grinding WheeLhaVing the form shown in Fig.

suitable for carrying out thernethod of my invention and then describe their use.

A is the body of the wheel, and may be bushed with a metal bushing of lead or other material, as indicated at B. The body a A' is formed of corundum, emery or other suitable dense and hard grindin material, molded or formed under any of the usual processes into a grinding disk or wheel, and having its peripheral surface C provided with a plurality of circumferential cutting edges, V-sha-ped in cross section, and lying in parallel planes to the general plane of the wheel. In thepreferred form of my grinding wheel, the peripheral surface is formed by two general surfaces D, D, which meet in a circumferential V-shaped cutting edge E,-so that the general cross section of the Wheelprovides a grinding surface of sub mentation will permit.

'stantially V-shaped cross section. The surfaces D, D, are 'more or less conical, and instead of being lain are provided with cir-" cumferential grinding edges F separated by the depressions G, also preferabl V-shaped sur aces D, D,

V-cuts thus produced in the side surfaces of the main -V-cut will terminate atthe extreme bottom of the main V-cut in the V producedby the central peripheral cutting edge E. .which makes a 0 early definedcentral 'line' to the ornamentation. i

In the construction of grinding'surface shown in Fig. 4, the conical surfaces which meet in the grinding edge, E are shown as more oblique vmaking the, general config: uration of the cutting surface C more flattened than in the case of Fi. 3. Its surfaces D are also shown as slig tly curved in cross section, the curvature being inward so that the outer surfaces are somewhat concave. In this case, the secondary V-cutting edges F will be more directly presented to the glass in the cutting'operation, so that.

each of the faces f, f,'thereof acts in more or less the same, manner'in producing-the secondary V-cuts in the main or large V- groove formed in the body of the glassware.

In the construction shown in Fi 5, I have substantially the same details as in Fig. 4, except that the outer inclined surfaces are curved slightly outward so that in cross section they are convex, and the said convex surfaces provided with the V-cut edges F,

as aforesaid. The general configuration of the peripheral cutting surfaces may be varied within large limits provided the adjacent cutting edges F of tliecutting surface are arranged at clliferent peripheral distances from the axial line of the grinding wheel; and it will also be understood that in a grinding wheel of the general character herein described, the same may be used to ornament the glass by using only one of the surfaces D'in certain cases where the orna- The usual main ornamentation, however, involves the use of V-cuts of considerable depth, and this grinding wheel is especially adapted for such purposes; but in other forms of ornamentation, the plurality of parallel V- grooves may be cut in the surface of the glass by the action of one of the peripheral 'seen that the central cutting 7, 8 and'9 are produced byuse of the 1 ing wheel shown in Fig. 4. While the leaf .Lin Fig.

f efi'ect. taneously sion may be ground out'pre 4 cutting of the parallel Vgrooves that found in leaf structures '7). In the cutting of surfaces D, or the wheel maybeformed as if only composed of one such surface.

As an example of-the ornamental cutting which is possible with my wheel,

I have. illustrated in Fig. 6 the terminal portion of a leaf cut. This cut isaccomcharacter shown in Fig. 5, and it will be edge E produces the central V-cut E of the leaf whereas the secondary V-cutting edges F plished with the grinding wheel of the.

produce the 'secondav V-grooves F in the leaf. Moreover, the coves G of the cutting tool rovide the sharp .V-ridges G of the leaf? In Fig. 7, I have shown two full leaves on a stem and lettered to correspond to the lettering in Fig. 6 except that the stem is lettered E. Fig. 8 indi cates the varying 'depths of the cuts longitudinally of the leaf and Fig; 9 illus-- trates the varying depths of the successive parallel V cuts transversely of the leaf. The' particular cuts here shown in Figs.

7 hasallof the V cuts straight the leafL has such cuts curved for graceroduced by the one operation and bear t e same identical relation as in the leaf L. Ifdesired, thegeneral depress the workmanThe parts F and G and.

their connecting walls meet with the face of the that there is surglass body in such a manner a serrated edge F similar to .(Figs. 6 and such a leaf effect, the grindin glass to a gradually inbe moved parallel to the plane of rotation of the wheel to the desiredextent so as to extend. the, length of the leaf cut and have a relatively less depth to the length in the finished leaf ornamentation. lating the glass upon the the glass may be cut more abruptly to the desired depth on the part of the. leaf next to the stem than at the point of the leaf and this is indicated in Fig. 8, andproduces a more pointed leaf with better defined serrated ints F at the end of each of the parallel grinding wheel the points of the leaf V cuts. To' produce thestem effect on the leaf, it is only necessary grindbut all of the said cuts are simulary to the'i toquicken wheel is caused to cut into he body 0 the 1n Figs. 6 and 7, the glassarticle would In maniputhe V-edge E; or, if desired, by the said cutting edge and the adjacent secondary cutting edges F, as would be indicated by thejdot-ted lines at. E in Fig. 6 and full lines at E in Fig. 7.

There are numerous ways of using the Wheel in the cutting operation, and I do not confine myself 'to any special application, but give the illustration in Figs. 6 to '9 inclusive of the leaf effect as anexample of the artistic. results of the use of a wheel embodying. my invention. The angle of the cutting faces of the secondary circumferential V-edges may be more or less varied to suit the desire, of the designer; and likewise, the angle or general circumferential shape produced by the arrangement of these secondary circumferential V-cutting edges may be greatly varied and the Wheels employed without departing from the spirit of the invention.

In this application I do not make claim, to the article as that is reserved for a sepa-.

rate application.

Having now described my invention, what I claim as new and desire to secure by Let t'ers Patent, is Y Y r 1. The herein described method in the .art of producing a serrated ornamental effect in the surface of a glass article, which consists in simultaneously cutting a plurality of parallel grooves of relatively small size to constitute together a "large gradually v transversely and longitudinally and-thereby 'unto set my hand.

oove of. decreasmg depth from 1ts-middle causing the parallel grooves to terminate in the surface of the glass article'in relatively different positions longitudinally to the cutting, whereby the surfaces of each of said grooves provides in their meeting lines with the surface of the glass article a zig-zag or serrated eflect.

2. The herein described method in art of producing a serrated ornamental effect the surface of a glass article, Which consists-in producing a leaf effect by simultaneously cutting a plurality of parallel grooves of relatively small size to constitute together a large groove of gradually decreasing depth from versely and longitudinally and thereby causing the parallel grooves to terminate in the surface of the glass article in relatively difl'erent positions longitudinally to the cutting, whereby the surfaces of each of said grooves provides in their meeting lines with the surface of the glass article a zig-zag or one terminal point of leaf effect with a stem efiect formed by simultaneously cut ting into the surface of the glass a plurality of parallel very shallow. grooves of substantially constant depth the middle groove cut to agreater depth than the adj acent grooves on each side thereof.

In testimony of'which invention, I here- JAMES sTo-TT,

Witnesses:

M. HUNTER, E. SMITH.,

the

its middle trans- 

